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Posted on December 19, 2017 at 8:39 AM by Michael Stalberger
Drainage update 12/18/2017
Holidays Notice: Due to the Christmas and New Year's Holidays - the DrainageBlog is taking the next two weeks off. Enjoy your holidays with family and friends and we in the Drainage Office look forward to starting another year of drainage update blogs January 8, 2018.
Upcoming Drainage Hearings or Meetings:
meetings scheduled at this time.
Most of our
projects are coming to a quick halt this week, with the pending change in
weather. As of last week, we just had
the one project still going. We are
still making repairs and doing ditch cleanings at this point, but the ice in
the open ditches is getting thicker by the day. That makes the cleaning projects
all the more difficult to the point that we may have to stop ditch cleaning for
We’ve had a
busy last couple of weeks with landowner meetings and hearings. There is a potential for more improvement projects based on these recent landowner meetings. Next year will be another fairly busy year
with two improvement projects scheduled so far.
One project will start early spring in the Eagle Lake and Madison
I’m still trying
to get televising completed on the few last systems for the year. Our televising machine broke down a couple
weeks ago. Hopefully this week we can
get back at it and complete some of the televising before the weather makes it unfit
to continue. Televising is always a
great and relatively inexpensive way to get a glimpse into the existing condition
of a tile system.
Drinking Water Battle:
Each day is a
battle in the fight to supply 12 million gallons of clean drinkable water to
Mankato residents. In this battle for
clean drinking water, Mankato is a leader in their use of technology to bring
quality water that even exceeds federal standards.
The Mankato water
plant uses a system from start to finish to make sure our drinking
waters are safe. The more important, and
one of the final steps, in making safe drinking water is the use of ultrafiltration
membranes. These membranes are a system
of 11,000 plastic tubes roughly the size of a cocktail straw, that are inside
of an 8-inch pipe. These tiny plastic
tubes can trap out bacteria and some larger viruses down to about two-hundredths
of a micron. These filtration tubes may
be small in size but are very long; if they were all strung together they would stretch 6,000
ten years of use and repeated chemical cleansing treatments, these filtration
tubes are getting worn out. A ten-year
life is about all that is expected from these filtration membranes. Mankato water plant crews are now going through
the task of changing the membranes out in a two-year project. This project comes with a price of around $600,000
to change out all of the membranes.
These filtration membranes do a great job of cleaning sediments and
bacterial items, but nothing for nitrates or phosphates. Nitrates and
phosphates are an increasingly large issue in many of the wells and drinking
water supplies for many Minnesota communities.
These issues of nitrates and phosphates have to be handled separately in
a different treatment process.
the ways the City of Mankato is preparing for this possible issue in the
future is to do a cost study on a reverse osmosis system which would keep
nitrates and phosphates out of our drinking water. These osmosis systems come at a heavy price
tag, as the city of St. Peter just recently made the upgrade to their system. For the time being, our drinking water is
mostly sourced from wells 60 plus feet below our local rivers. Our wells are at the moment still free
from nitrates, but that can change in a hurry and a plan for the future sounds
like it’s already in the works. Mankato
has and will continue to provide good, safe, quality drinking water to it’s
residents for decades to come.
To read this
full article for yourself click the link. http://www.mankatofreepress.com/news/local_news/mankato-water-gets-a-fresh-set-of-filters/article_8ce2d8ca-e10e-11e7-85aa-dbe75fb3aa2e.html
Recent Drainage Inspections – week of December 11 – December 15:
call with issues you observe on our public drainage system, as there is a lot
of open ditch and tile in our county and only two of us in the drainage
department. We will do our absolute best to service your issues and
concerns as we receive them.
We require that all repairs to a county
drainage system (tile or open ditch) be authorized by one us in the drainage
office, either Craig or myself, before any repairs are made.
Drainage Management Specialist